<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style>
.loading { width: 80px; height: 40px; margin: 0 auto; margin-top: 100px; }
.loading span { display: inline-block; width: 8px; height: 100%; border-radius: 4px; background: lightgreen; -webkit-animation: load 1s ease infinite; }
 @-webkit-keyframes load {  0%, 100% {
 height: 40px;
 background: lightgreen;
}
 50% {
 height: 70px;
 margin: -15px 0;
 background: lightblue;
}
}
.loading span:nth-child(2) { -webkit-animation-delay: 0.2s; }
.loading span:nth-child(3) { -webkit-animation-delay: 0.4s; }
.loading span:nth-child(4) { -webkit-animation-delay: 0.6s; }
.loading span:nth-child(5) { -webkit-animation-delay: 0.8s; }
.tishi{ margin:0 auto; text-align:center; margin-top:30px; color:#09C; font-weight:bold}
</style>
</head>

<body>
<div class="loading"> <span></span> <span></span> <span></span> <span></span> <span></span> </div>
<div class="tishi">数据处理中，请稍后……</div>
</body>
</html>
